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RunMat

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© 2026 Dystr · Made withfor the scientific community.

RunMat™ is a registered trademark of Dystr, Inc. MATLAB® is a registered trademark of The MathWorks, Inc. RunMat is not affiliated with, endorsed by, or sponsored by The MathWorks, Inc.

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Builtin Reference
    • adjacency
    • bfsearch
    • conncomp
    • degree
    • dfsearch
    • digraph
    • distances
    • findedge
    • graph
    • indegree
    • neighbors
    • numedges
    • numnodes
    • outdegree
    • predecessors
    • shortestpath
    • successors
    • toposort
    • treelayout

findedge — Find the index of an edge between two nodes.

findedge(G,s,t) returns the one-based edge index for the first matching edge, or 0 when no edge exists.

Syntax

findedge(G,s,t)

Using findedge with coding agents

Open a RunMat example with live inputs, then ask the agent to explain how findedge changes the result.

Run a small findedge example, explain the result, then change one input and compare the output.

Related Graph functions

adjacency · bfsearch · conncomp · degree · dfsearch · digraph · distances · graph · indegree · neighbors · numedges · numnodes · outdegree · predecessors · shortestpath · successors · toposort · treelayout

Open-source implementation

Unlike proprietary runtimes, every RunMat function is open-source. Read exactly how findedge is executed, line by line, in Rust.

  • View the source for findedge in Rust on GitHub
  • Learn how the RunMat runtime works
  • Found a bug? Open an issue with a minimal reproduction.

About RunMat

RunMat is an open-source runtime that executes MATLAB-syntax code blazing on any GPU. It is licensed under the Apache 2.0 license.

  • RunMat automatically optimizes your math for GPU execution on Apple, Nvidia, and AMD hardware. No code changes needed. Simulations that took hours now take minutes.
  • Start running code in seconds. RunMat runs in the browser, on the desktop, or from the CLI. No license server, no IT ticket.

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On this page
  • Syntax
  • Using findedge with coding agents
  • Related Graph functions
  • Open-source implementation
  • About RunMat